Page 144 - 《应用声学》2025年第1期

第 44 卷 第 1 期 Vol. 44, No. 1
2025 年 1 月 Journal of Applied Acoustics January, 2025

⋄ 研究论文 ⋄

超声波流量计的压电换能器动态性能一致性研究 ∗

张丽稳 1 杨喜良 1 张 兴 1 嵇 闯 2 齐 浩 2 宿 彬 2 张 凯 2†

(1 国家管网集团科学技术研究总院分公司 廊坊 065000)
(2 中国计量大学计量测试与仪器学院 杭州 310018)

摘要：超声流量计的关键组成部分是压电换能器，其性能指标决定流量计的计量准确性和稳定性。针对没有
关于换能器匹配性技术指标的规范与标准这一问题，提出一种基于动态时间规整的换能器一致性评估方法，
并进行快速配对研究。该方法通过回波信号时间序列的规整路径距离，进行换能器动态性能一致性评估，可
以高效地实现换能器动态特性分析。水流量测量实验结果表明：通过动态时间规整算法计算得出的规整路
径距离越小，配对的换能器一致性越高，零流量时的顺逆流传播时间差最大可减小到 0.3 ns，零流量读数小
于 ±0.01 m/s，小流量重复性优于 0.2%，满足 1.5 级精度标准，验证了该方法的可行性，满足了实际工程应用
的需要。
关键词：超声波换能器；动态时间规整算法；规整路径距离；一致性研究；流量计量
中图法分类号: TH814 文献标识码: A 文章编号: 1000-310X(2025)01-0140-08
DOI: 10.11684/j.issn.1000-310X.2025.01.014

Consistency research of ultrasonic transducer based on dynamic time

warping algorithm

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ZHANG Liwen , YANG Xiliang , ZHANG Xing , JI Chuang , QI Hao , SU Bin and ZHANG Kai 2
(1 PipeChina Institute of Science and Technology, Langfang 065000, China)
(2 College of Metrology Measurement and Instrument, China Jiliang University, Hangzhou 310018, China)
Abstract: The key component of the ultrasonic flowmeter is the piezoelectric transducer, whose performance
index determines the metering accuracy and stability of the flowmeter. In order to solve the problem that
there is no specification and standard for transducer matching, a method of transducer consistency evaluation
based on dynamic time warping (DTW) is proposed, and a fast matching study is carried out. By using the
regular path distance of the echo signal time series, the dynamic performance consistency of the transducer can
be evaluated, and the dynamic characteristics of the transducer can be analyzed efficiently. The experimental
results of water flow measurement show that: The smaller the distance of the regular path calculated by DTW
algorithm, the higher the consistency of the paired transducer, the maximum time difference of upstream and
downstream propagation at zero flow rate can be reduced to 0.3 ns, the zero flow reading is less than ±0.01 m/s,
and the repeatability of small flow rate is better than 0.2%, meeting the 1.5 level accuracy standard, which
verifies the feasibility of this method. It meets the needs of practical engineering applications.
Keywords: Ultrasonic transducer; Dynamic time warping algorithm; Regular path distance; Consistency
research; Flow metering
2023-08-26 收稿; 2023-11-12 定稿
国家自然科学基金项目 (11472260)
∗
作者简介: 张丽稳 (1983– ), 女, 河北人, 硕士, 高级工程师, 研究方向: 油气管道设备国产化, 油气计量管理, 设备智能化, 自控设备
判废标准等。
† 通信作者 E-mail: zkzb3026@cjlu.edu.cn